<table>
    <tr>
        <td>111</td>
    </tr>
    <tr>
        <td>
            <table>
                <tr>
                    <td>222
                        <table>
                            <tr>
                                <td>333</td>
                            </tr>
                        </table>
                    </td>
                </tr>
            </table>
        </td>
    </tr>
</table>